|Year|English Title|Chinese Title|Director|Role|
|---|---|---|---|---|
|1933|Twenty-Four Hours in Shanghai|上海二十四小时|Shen Xiling||
|1937|Street Angel|马路天使|Yuan Muzhi|Xiao Chen|
|1937|Crossroads|十字街头|Shen Xiling|Zhao|
|1947|Far Away Love|遙遠的愛|Chen Liting|Xiao Yuanxi|
|1947|Rhapsody of Happiness|幸福狂想曲|Chen Liting||
|1949|Crows and Sparrows|烏鴉与麻雀|Zheng Junli|Little Broadcast|
|1949|Women Side by Side|丽人行|Chen Liting|Zhang Yuliang|
|1950|The Life of Wu Xun|武训传|Sun Yu|Wu Xun|
|1951|The Married Couple|我们夫妇之间|Zheng Junli||
|1956|Li Shizhen|李时珍|Shen Fu|Li Shizhen|
|1958|Lin Zexu|林则徐|Zheng Junli|Lin Zexu|
|1959|Nie Er|聂耳|Zheng Junli|Nie Er|

Question: how many films did zhao dan star in before 1949?
Answer: 5